论文成果
Hyperbranched polyether epoxy grafted graphene oxide for benzoxazine composites: Enhancement of mechanical and thermal properties
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论文类型: 期刊论文
发表时间: 2018-02-08
发表刊物: COMPOSITES SCIENCE AND TECHNOLOGY
收录刊物: SCIE、EI
卷号: 155
页面范围: 11-21
ISSN号: 0266-3538
关键字: Hyperbranched; Epoxy; Graphene oxide; Benzoxazine
摘要: Hyperbranched polyether epoxy (HBPEE) grafted graphene oxide (GO-HE) was designed to improve the dispersion/exfoliation and interfacial interaction between graphene oxide and benzoxazine (BOZ). The structures and morphologies of graphene oxide (GO) and GO-HE sheets were characterized by FT-IR, XRD, XPS, Raman spectroscopy, TEM and AFM. BOZ composites containing GO and GO-HE were prepared with different loadings and systemically investigated. GO and GO-HE produced 88% and 139% improvements, respectively, in impact strength at 0.05 wt% loading. The three-point bending test indicated that the BOZ/GO-HE composites exhibited higher flexural strength and modulus than the neat BOZ or BOZ/GO composites. For BOZ composites containing 0.05 wt% GO-HE, the flexural strength increased by 14.4%, and the flexural modulus increased by 10.0% compared to that of neat BOZ. Furthermore, the T-g and thermal stability of BOZ/GO-HE composites were significantly improved compared to those of neat BOZ and BOZ/GO composites. These improvements can be ascribed to better dispersion of GO-HE and a stronger interfacial interaction between GO-HE and the matrix, according to TEM and SEM analyses. (C) 2017 Elsevier Ltd. All rights reserved.

蹇锡高

教授   博士生导师   硕士生导师

性别: 男

毕业院校:大连工学院

学位: 硕士

所在单位:化工学院

学科:高分子材料. 高分子化学与物理. 膜科学与技术

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电子邮箱:jian4616@dlut.edu.cn

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